Road-grading and excavating machine.



E. A., HOLLENBEGK. ROAD GRADING AND EXOAVATING MACHINE. APPLICATIONFILED MAR-29, 1910.

1,025,569. PAtentedMay'P, 1912.

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E. A. HOLLENBEOK. ROAD GRADING AND EXGAVATING MACHINE. APPLICATION TILEDMAR. 2. 9, 1910. 7 1,025,569, Patiented May 7, 1912.

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COLUMBIA PLANOORAPH cc... WASHINGTON. D. c.

A. HOLLBNBEOK. ROAD GRADING AND EXGAVATING MACHINE.

APPLICATION FILED MAR.29, 1910. 1 ,O25, 569, Papented May 7, 1912.

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WITNESSES INVENTOR Ms w @Zk COLUMBIA PLANOGRAPH cb.,wAH|NaToN. u. c,

UNITED STATES PATENT OFFICE.

ELIJ'AH A. I-IOLLENBECK, 0F HOLDREGE, NEBRASKA, ASSIGNOR TO THEI-IOLLENBECK MANUFACTURING 00., OF HOLDREGE, NEBRASKA.

ROAD-GRADING AND EXCAVATIN G MACHINE.

Specification of Letters Patent.

Patented May '7, 1912.

To all whom it may concern:

Be it known that I, ELIJAH A. HOLLEN- BECK, a citizen of the UnitedStates of America, and resident of Holdrege, in the county of Phelps andState of Nebraska, have invented certain new and useful Improvements inRoad-Grading and Excavating Machines, of which the following is aspecification.

This invention relates to excavating machines and is designed as animprovement in the mechanism described and claimed in my Patent Number900,369, issued October c, 1908.

An object of this invention is to provide a novel attachment fortraction engines which may be readily applied to the boiler and parts ofa traction engine in a manner to allow its ready removal when thetraction engine is to be used for other purposes, the

a said attachment being designed for the purpose of grading roads ortreating surfaces of earth for the purpose of converting it into a roador way.

A further object of this invention is to provide a road grader having aconveyer with novel means for automatically adjusting the conveyer beltaccording to the weight of the material carried thereby; furthermore, anobject of this invention is to provide power transmitting devices havinga clutch and having novel means for controlling the cluteh coupled witha frame for suspending the conveyer and the operating parts of theexcavator from the boilen. and frame of a traction engine.

A still further object of this invention is to provide novel means forcontrolling the action of the excavator proper and its relation to theinner end of the conveyer, novel means being also provided for couplingthe excavator frame to the traction engine in order that said excavatorwill take motion therefrom.

Many other objects are attained through the provision of novel mechanismto be hereinafter described and specifically claimed.

In describing the invention in detail, reference will be had to theaccompanying drawings, forming part of this specification wherein likecharacters denote corresponding parts in the several views, in which-Figure 1 illustrates a view in perspective of the complete apparatus forattachment to a traction engine; Fig. 2 illustrates a front view of atraction engine with the front truck removed and with the attachment applied thereto; Fig. 3 illustrates a side elevation of a traction enginein outline showing that part of the apparatus on one side of thetraction engine in elevation; Fig. 1 illustrates a detail view of aportion of the conveyer embodying a dust-proof boxing for a rollerthereon; Fig. 5 illustrates an enlarged detail view of a fragment of thedrive roller for the conveyer showing its automatic bearing alinementand reversible gear; Fig. 6 illustrates a detail sectional view with thelower roller of the conveyer in elevation and a knife for removing earthfrom the roller and a receptacle for containing the earth removed fromthe roller. Fig. 7 is a detail view of the screw conveyer, for removingthe dirt from the receptacle or trough 79, and Fig. 8 illustrates aperspective view of a fragment of the conveyer rails and partsassociated therewith.

In these drawings, I have shown hangers 10 provided with heads 11 whichare designed to be bolted to the boiler casing of a traction engine, thesaid hangers having their lower ends connected to the sills 12 whichform the frame for supporting nearly all of the apparatus comprising theexcavator and conveyer. As shown in Fig. 2, the sills extend under theboiler 15 of the traction engine transversely thereof. The

ends of the sills that project at one side of the engine and at theinner end of the conveyer to be presently explained, are connected to anend sill 16, thus forming with the sills 12 a rigid frame with relationto which the excavator and conveyer are adjustable.

The sill 16 may be connected to the rear traction wheel in anyappropriateway and said sill 16 carries a standard 17 to which arepivotally connected the bars 18 and 19. The pairs of bars 18 and 19 justmentioned embrace the standard 20 of the mold board 21 of the excavator,which mold board is set to direct the earth of excavated matter to themouth of the conveyer as shown. The standard 20 is pivoted to the barsor links 18 and 19 by means of fastenings 22 of any appropriate type.The forward ends of the bars are pivotally connected to a rod 23 whichis suspended by a chain 24: adapted to be wound on a shaft 25. I providethe shaft with a worm wheel 26 in mesh with a worm 27, the said wormbeing mounted on a shaft 28 provided with a hand wheel 29 for rotatingthe same. The shaft 25 is journaled in extensions of the arms or posts30 which are supported by the sill 16, the said sill 16 having its endbent in a manner to form a support for one of the posts 30, whereas themain portion of a sill 16 supports a companion post 30. By means of theforegoing mechanism, the standard 20 and excavator blade 21 may beraised and lowered at will; the standard 20 retaining its substantiallyperpendicular relation to the sill 16, in all its adjusted positions; asis readily discernible in Figs. 1 and 3. As a means for moving themechanism with the traction engine, the sill 16, as stated, is connectedto the rear traction wheel and a pull rod 31 is connected to the sill 16and extends upwardly and forwardly of the boiler of the traction engineand is secured to said boiler as well shown in Fig. 3.

By reason of the elements and their relation to one another heretoforedescribed, it will be apparent that the excavator may be elevated orlowered through the manipulation of the hand wheel 29 and that,thereafter, the depth of the cut made by the excavator may be varied tosuit the conditions of the road and the particular requirements. Theconveyer hastwo side rails 32 and 33 connected at their inner ends by ashoe 34 which shoe is turned up at its end at 35, in order that it mayslide over the surface of the earth.

The side rails of the conveyer have the dust-proof journal boxes 36which receive the shaft 37 of the lower conveyer roller 38 over whichthe conveyer belt 39 is run. The side rails are also provided withjournal bearings for the conveyer belt supporting rollers 40 which aretapered in diameter toward their centers in order that the conveyer beltrunning thereon will have a trough-like formation for the purpose ofconfining the earth or excavated material therein, as the belt travelsthereon. The outer drum or roller 41 of the conveyer has a shaft 42 witha beveled gear wheel thereon which is in mesh with a gear wheel 43, saidwheel 43 being mounted on a tumbling rod 44. The shaft 42 is journaledin a bearing 45 secured in one side rail of the conveyer. Said bearinghas arms 46 and 47 terminating in bearings 48 and 49 respectively forthe tumbling rod 44. The raising and lowering of the elevator frame,which action will be presently explained, makes it impractical to havethe journal bearing 45 rigid on the conveyer and therefore the shank ofthe journal bearing is made round in order that it may revolve andassume any desired angle necessary to conform to the direction assumedby the tumbling rod. The ournal bearings 48 and 49 serve the doublepurpose of retaining the bearing in line and permit the changing of thesmall beveled gear wheel to the opposite side of the companion gearwheel when it is desired to run the conveyor belt in the oppositedirection, the relation of these companion gear wheels being defined bythe direction of rotation of the line shaft of the engine to which theexcavating and conveying apparatus is applied.

The tumbling rod 44 has a knuckle joint 50 by which it is connected tothe shaft 51, the said shaft having a clutch 52 by which the shaft 51 isdrawn into and out of connection with the shaft 53, which shaft 53 isprovided with a sprocket wheel to engage a sprocket chain 55 takingmotion from the shaft 56 of the engine through its engagement with thesprocket wheel 57 on said shaft 56. By reason of the connection justindicated, the conveyer is driven as the engine is operating althoughthe said conveyer may be drawn out of action by the clutch justdescribed.

The inner side rails 32 and 33 of the conveyer frame are in lapped andparallel relation to the outer side rails 32 and 33 respectively, thelatter being provided with slots 34 at their inner ends which receivethe studs 67; the latter being secured to the inner rails 33 andextending through the substantially horizontal links 60 and through thesubstantially vertical links 66, for the purposes hereinafter explained,and the studs 67 are slidably movable in said slots, whereby a relativemovement of the lapped ends of the said rails is obtained, by means ofthe following described mechanism. The outer side rails of the conveyerframe have the levers 58 pivoted to them at 59, said levers being alsopivoted to the links 60; and hence as the said levers 58 are oscillated,the outer side rails of the conveyer frame are moved longitudinally,proportionally to the movement of the levers 58 and thus the length ofthe con veyer frame is increased or diminished for the purpose oftightening and loosening the conveyer belt. The levers 58 have rods 61connected to them and to chains 62 which are run over sheaves 63 on ashaft 64, and shaft 64 has a hand wheel 65 by which it may be rotatedfor the purpose of adj usting the position of the levers 58. The links66 having their lower ends pivoted to the studs 67 and having theirupper ends journalcd on the crank 68, carried by a rotatable shaft 69,which is provided with a hand wheel 7 O, for the purpose of turning theshaft to adjust the position of the links serve as means for raising andlowering the outer portion of the conveyer frame. The shaft has aratchet wheel 71 thereon which is engaged by a dog 72 for the purpose ofholding the shaft 69 at its different positions of adjustment. Brackets7 3 are connected to the boiler 15 at the points 7l75 and the saidbrackets brace the frame on which the bearings for the shafts 69 and 64:are rotatable.

The inner end of the conveyor frame is adapted to be raised and loweredin unison with the excavator 21 through the medium of an arm 76, towhich a chain 77 is attached; this chain is connected to the conveyerframe. The arm 76 is attached to the standard 20 and moves, as stated,with the excavator. In order to prevent the accumulation of earth on theroller at the inner end of the conveyer, I provide a knife 78 which hasits edge in close proximity to the periphery of the roller in order thatany accumulation of earth on the roller will come in contact with theedge of the knife and will be dislodged thereby. The knife is formedintegral with the box or receptacle 79, which is designed to receive theearth which is dislodged from the roller. By this means, the roller iskept clean in order that the conveyer belt may have proper action on itssurface. The outer end of the conveyer frame is provided with a shieldor housing 80 which is a frame like structure designed to protect theconveyer belt when the conveyer is close to the ground or is beingoperated in filling carts, wagons, or other vehicles.

In order to remove the material scraped from the roller, I provide apulley a designed to rotate the shaft of the screw conveyer Z), and thesaid shaft of the screw conveyer is journaled in brackets a secured tothe elevator frame.

I claim: I p

1. In a road grading machine, a frame adapted to be connected to atraction engine comprising a sill in substantially horizontal alinementwith the line of travel vof said engine, said sill having asubstantially vertical standard secured to its rearward portion,substantially parallel bars pivoted at their rearward ends to saidstandard and attheir forward ends to a vertically reciprocable rod,anexcavator blade having a substantially vertical standard extendingupward therefrom and pivoted to said parallel bars, and means coactingwith the rod for raising and lowering the excavator, whereby the saidstandard thereof retains its vertical relation in its different adjustedpositions.

2. In a grading machine, a combination of a conveyer and an excavatorand means for movably supporting the conveyer and excavator embodying aframe consisting of a sill and vertical posts on the sill, said framebeing connected with the conveyer, a vertical standard supported by thesill, bars pivotally secured to the standard above and below the sill, avertical rod pivotally connected to the bars, an excavator-bladepivotally connected with the bars, and means embodying said posts andsaid vertical rod for raising and lowering the excavator-blade relativeto the conveyer.

In testimony whereof, I hereunto affix my. signature in the presence oftwo wltnesses.

ELIJAH A. HOLLENBEOK.

Witnesses:

R. W. MORTIMER, JOHN IMERSLUN.

'Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. G.

